<span>A. Exact ecological footprints are often difficult to calculate, but estimates can be useful in comparing populations.
</span>Which of the following could be said about ecological footprints? <u /> <u>Exact ecological footprints are often difficult to calculate, but estimates can be useful in comparing populations.</u><u />
NOT: b. Ecological footprints can't be used to determine carrying capacity. C. Ecological footprints don't take into account resources needed to absorb and manage wastes. <span>D. The average ecological footprints for various countries are nearly identical.</span>
